thr3ads.net - Nouveau - [Nouveau] [PATCH] drm/nouveau: Adding support to control backlight using bl

If this information is useful, please help other people find it:
Share via:

antoniospg

2022-Oct-29 18:48 UTC

[Nouveau] [PATCH] drm/nouveau: Adding support to control backlight using bl_power for nva3.

Test plan:

* Turn off:
echo 1 > /sys/class/backlight/nv_backlight/bl_power

* Turn on:
echo 0 > /sys/class/backlight/nv_backlight/bl_power

Signed-off-by: antoniospg <antoniospg100 at gmail.com>
---
 drivers/gpu/drm/nouveau/nouveau_backlight.c | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/nouveau/nouveau_backlight.c
b/drivers/gpu/drm/nouveau/nouveau_backlight.c
index a2141d3d9b1d..855d0ce9f7fa 100644
--- a/drivers/gpu/drm/nouveau/nouveau_backlight.c
+++ b/drivers/gpu/drm/nouveau/nouveau_backlight.c
@@ -263,7 +263,16 @@ nva3_set_intensity(struct backlight_device *bd)
 	u32 div, val;
 
 	div = nvif_rd32(device, NV50_PDISP_SOR_PWM_DIV(or));
-	val = (bd->props.brightness * div) / 100;
+
+	switch (bd->props.power) {
+	case FB_BLANK_UNBLANK:
+		val = (bd->props.brightness * div) / 100;
+		break;
+	default:
+		val = 0;
+		break;
+	}
+
 	if (div) {
 		nvif_wr32(device, NV50_PDISP_SOR_PWM_CTL(or),
 			  val |
-- 
2.25.1

Bagas Sanjaya

2022-Oct-30 13:05 UTC

head link

[Nouveau] [PATCH] drm/nouveau: Adding support to control backlight using bl_power for nva3.

On Sat, Oct 29, 2022 at 03:48:50PM -0300, antoniospg
wrote:> Test plan:
> 
> * Turn off:
> echo 1 > /sys/class/backlight/nv_backlight/bl_power
> 
> * Turn on:
> echo 0 > /sys/class/backlight/nv_backlight/bl_power
> 
You sent this patch twice, so I reply to the latest one.

What is it doing? Please describe the patch. Remember to write the
description in imperative mood.

-- 
An old man doll... just what I always wanted! - Clara
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 228 bytes
Desc: not available
URL:
<https://lists.freedesktop.org/archives/nouveau/attachments/20221030/8b81fdf0/attachment-0001.sig>

Sam Ravnborg

2022-Oct-30 20:48 UTC

head link

[Nouveau] [PATCH] drm/nouveau: Adding support to control backlight using bl_power for nva3.

On Sat, Oct 29, 2022 at 03:48:50PM -0300, antoniospg
wrote:> Test plan:
> 
> * Turn off:
> echo 1 > /sys/class/backlight/nv_backlight/bl_power
> 
> * Turn on:
> echo 0 > /sys/class/backlight/nv_backlight/bl_power
> 
> Signed-off-by: antoniospg <antoniospg100 at gmail.com>
> ---
>  drivers/gpu/drm/nouveau/nouveau_backlight.c | 11 ++++++++++-
>  1 file changed, 10 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/gpu/drm/nouveau/nouveau_backlight.c
b/drivers/gpu/drm/nouveau/nouveau_backlight.c
> index a2141d3d9b1d..855d0ce9f7fa 100644
> --- a/drivers/gpu/drm/nouveau/nouveau_backlight.c
> +++ b/drivers/gpu/drm/nouveau/nouveau_backlight.c
> @@ -263,7 +263,16 @@ nva3_set_intensity(struct backlight_device *bd)
>  	u32 div, val;
>  
>  	div = nvif_rd32(device, NV50_PDISP_SOR_PWM_DIV(or));
> -	val = (bd->props.brightness * div) / 100;
> +
> +	switch (bd->props.power) {
> +	case FB_BLANK_UNBLANK:
> +		val = (bd->props.brightness * div) / 100;
> +		break;
> +	default:
> +		val = 0;
> +		break;
> +	}
> +
Consider the following change:

	val = backlight_get_brightness(bd);
	if (val)
		val = (val * dev) / 100;

Then you avoid hard coding the use of FB_BLANK_UNBLANK.

	Sam

antoniospg

2022-Oct-31 16:32 UTC

head link

[Nouveau] [PATCH] drm/nouveau: Add support to control backlight using bl_power for nva3.

Summary:

* Add support to turn on/off backlight when changing values in bl_power
  file. This is achieved by using function backlight_get_brightness()
  in nva3_set_intensity to get current brightness.

Test plan:

* Turn off:
echo 1 > /sys/class/backlight/nv_backlight/bl_power

* Turn on:
echo 0 > /sys/class/backlight/nv_backlight/bl_power

Signed-off-by: antoniospg <antoniospg100 at gmail.com>
---
 drivers/gpu/drm/nouveau/nouveau_backlight.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/nouveau/nouveau_backlight.c
b/drivers/gpu/drm/nouveau/nouveau_backlight.c
index a2141d3d9b1d..5c82f5189b79 100644
--- a/drivers/gpu/drm/nouveau/nouveau_backlight.c
+++ b/drivers/gpu/drm/nouveau/nouveau_backlight.c
@@ -263,7 +263,11 @@ nva3_set_intensity(struct backlight_device *bd)
 	u32 div, val;
 
 	div = nvif_rd32(device, NV50_PDISP_SOR_PWM_DIV(or));
-	val = (bd->props.brightness * div) / 100;
+
+	val = backlight_get_brightness(bd);
+	if (val)
+		val = (val * div) / 100;
+
 	if (div) {
 		nvif_wr32(device, NV50_PDISP_SOR_PWM_CTL(or),
 			  val |
-- 
2.25.1

Antonio Gomes

2022-Nov-04 22:01 UTC

head link

[Nouveau] [PATCH v3] drm/nouveau: Add support to control backlight using bl_power for nva3.

From: antoniospg <antoniospg100 at gmail.com>

Summary:

* Add support to turn on/off backlight when changing values in bl_power
  file. This is achieved by using function backlight_get_brightness()
  in nva3_set_intensity to get current brightness.

Test plan:

* Turn off:
echo 1 > /sys/class/backlight/nv_backlight/bl_power

* Turn on:
echo 0 > /sys/class/backlight/nv_backlight/bl_power

Signed-off-by: antoniospg <antoniospg100 at gmail.com>
---
 drivers/gpu/drm/nouveau/nouveau_backlight.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/nouveau/nouveau_backlight.c
b/drivers/gpu/drm/nouveau/nouveau_backlight.c
index a2141d3d9b1d..5c82f5189b79 100644
--- a/drivers/gpu/drm/nouveau/nouveau_backlight.c
+++ b/drivers/gpu/drm/nouveau/nouveau_backlight.c
@@ -263,7 +263,11 @@ nva3_set_intensity(struct backlight_device *bd)
 	u32 div, val;
 
 	div = nvif_rd32(device, NV50_PDISP_SOR_PWM_DIV(or));
-	val = (bd->props.brightness * div) / 100;
+
+	val = backlight_get_brightness(bd);
+	if (val)
+		val = (val * div) / 100;
+
 	if (div) {
 		nvif_wr32(device, NV50_PDISP_SOR_PWM_CTL(or),
 			  val |
-- 
2.25.1

Antonio Gomes

2022-Nov-04 22:04 UTC

head link

[Nouveau] [PATCH v3] drm/nouveau: Add support to control backlight using bl_power for nva3.

From: antoniospg <antoniospg100 at gmail.com>

Summary:

* Add support to turn on/off backlight when changing values in bl_power
  file. This is achieved by using function backlight_get_brightness()
  in nva3_set_intensity to get current brightness.

Test plan:

* Turn off:
echo 1 > /sys/class/backlight/nv_backlight/bl_power

* Turn on:
echo 0 > /sys/class/backlight/nv_backlight/bl_power

Signed-off-by: antoniospg <antoniospg100 at gmail.com>
---
 drivers/gpu/drm/nouveau/nouveau_backlight.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/nouveau/nouveau_backlight.c
b/drivers/gpu/drm/nouveau/nouveau_backlight.c
index a2141d3d9b1d..5c82f5189b79 100644
--- a/drivers/gpu/drm/nouveau/nouveau_backlight.c
+++ b/drivers/gpu/drm/nouveau/nouveau_backlight.c
@@ -263,7 +263,11 @@ nva3_set_intensity(struct backlight_device *bd)
 	u32 div, val;
 
 	div = nvif_rd32(device, NV50_PDISP_SOR_PWM_DIV(or));
-	val = (bd->props.brightness * div) / 100;
+
+	val = backlight_get_brightness(bd);
+	if (val)
+		val = (val * div) / 100;
+
 	if (div) {
 		nvif_wr32(device, NV50_PDISP_SOR_PWM_CTL(or),
 			  val |
-- 
2.25.1

Nouveau - Oct 2022 - [PATCH] drm/nouveau: Adding support to control backlight using bl_power for nva3.

[Nouveau] [PATCH] drm/nouveau: Adding support to control backlight using bl_power for nva3.

[Nouveau] [PATCH] drm/nouveau: Adding support to control backlight using bl_power for nva3.

[Nouveau] [PATCH] drm/nouveau: Adding support to control backlight using bl_power for nva3.

[Nouveau] [PATCH] drm/nouveau: Add support to control backlight using bl_power for nva3.

[Nouveau] [PATCH v3] drm/nouveau: Add support to control backlight using bl_power for nva3.

[Nouveau] [PATCH v3] drm/nouveau: Add support to control backlight using bl_power for nva3.